#region Copyright (C) 2007 Jens Winter

//Copyright (C) 2007 Jens Winter

//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.

//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//Lesser General Public License for more details.

//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#endregion

using System;
using System.Linq;
using System.Collections.Generic;
using Flynn.Core.ExtensionMethods;
using MbUnit.Framework;
using Flynn.Core;

namespace Flynn.Core.Tests.ExtensionMethods
{
    [TestFixture]
    public class UpdateSequenceFixture
    {
        [Test]
        [ExpectedArgumentNullException]
        public void Version1MustNotBeNull()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update>(), null, "1");
        }

        [Test]
        [ExpectedArgumentNullException]
        public void Version1MustNotBeEmpty()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update>(), string.Empty, "1");
        }

        [Test]
        [ExpectedArgumentNullException]
        public void Version2MustNotBeNull()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update>(), "1", null);
        }

        [Test]
        [ExpectedArgumentNullException]
        public void Version2MustNotBeEmpty()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update>(), "1", string.Empty);
        }

        [Test]
        [ExpectedException(typeof(InvalidOperationException))]
        public void Version1MustExist()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update> {new Update("2")}, "1", "2");
        }

        [Test]
        [ExpectedException(typeof(InvalidOperationException))]
        public void Version2MustExist()
        {
            UpdateSequence.IsVersion1YoungerThanVersion2(new List<Update> {new Update("1")}, "1", "2");
        }

        [Test]
        public void Version1IsYoungerThanVersion2()
        {
            IEnumerable<Update> updates = new List<Update> { new Update("1"), new Update("2") };
            Assert.IsTrue(UpdateSequence.IsVersion1YoungerThanVersion2(updates, "2", "1"));
        }

        [Test]
        public void VersionIsNotYoungerThanItself()
        {
            IEnumerable<Update> updates = new List<Update> { new Update("1"), new Update("2") };
            Assert.IsFalse(UpdateSequence.IsVersion1YoungerThanVersion2(updates, "2", "2"));
        }
    }
}